Anxiety disorders come in many shapes and forms. People with panic disorder have chronic, unexpected, and repeated panic attacks where they feel an overwhelming sense of being in danger. Sufferers of generalized anxiety disorder have persistent and exaggerated worries and constantly expect disaster. Those with obsessive-compulsive disorder have unreasonable fears that they try to deal with through repetitive, ritualized activities such as hand washing. A phobia is an irrational and uncontrollable fear of a specific thing, while post-traumatic stress disorder occurs after a terrifying event and causes its victims to have flashbacks or frightening thoughts of the incident.

忧郁症的表现多种多样。患有恐慌症的人，一旦感到自己身处危险之中，就会长时间反复地感到恐慌。综合型忧郁症患者则时时过分焦虑，刻刻杞人忧天。强迫症患者则会有难以理解的恐惧，会通过习惯性的动作来排除不安情绪，如洗手。恐俱症是指对某种特定事物怀有非理性并且难以控制的恐惧。还有创伤后精神的紧张不适，患者在遭遇过一次可 怕的事件后，脑子里会不时地出现过去的那件事，而且一想起来就害怕。

(短文节选,本篇始于：“躁”化弄人)